/ Dictionary / Index P pollinium: Meaning and Definition of Find definitions for: pol•lin•i•um Pronunciation: (pu-lin'ē-um), [key] — pl. -lin•i•a an agglutinated mass or body of pollen grains, characteristic of plants of the orchid and milkweed families. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pollinium (Thesaurus) polliniferous pollinize Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language